May 18, 2011 makes it four years since a blast at Hyderabad's Mecca Masjid claimed 14 lives. However, there has been no breakthrough in case with the investigation going on at a snail's pace. Lateed Mohammad Khan, convenor of the Civil Liberties Monitoring Committee that has been fighting the case of the Muslim youth who were falsely implicated in the blast, says that the Hyderabad police protected Hindu radicals behind the bombing. Vicky Nanjappa reports.